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Controlled Clinical Trials
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February 1, 1994
Intercept studies, clinical trials, and cluster experiments: to whom can we extrapolate?
C D Cowan, J Wittes
Science (New York, N.Y.)
|
May 20, 1988
Sampling rare and elusive populations
S Sudman, M G Sirken, C D Cowan
Journal of the National Cancer Institute
|
June 3, 1992
Representativeness of the surveillance, epidemiology, and end results program data: recent trends in cancer mortality rates
C M Frey, M M McMillen, C D Cowan, et al.
Page
of 1
Search research articles
Search
Showing results (1-10 of 3) with videos related to
Sort By:
Page
of 1
Controlled Clinical Trials
|
February 1, 1994
Intercept studies, clinical trials, and cluster experiments: to whom can we extrapolate?
C D Cowan, J Wittes
Science (New York, N.Y.)
|
May 20, 1988
Sampling rare and elusive populations
S Sudman, M G Sirken, C D Cowan
Journal of the National Cancer Institute
|
June 3, 1992
Representativeness of the surveillance, epidemiology, and end results program data: recent trends in cancer mortality rates
C M Frey, M M McMillen, C D Cowan, et al.
Page
of 1